A new geometrical method for 3D evaluation of non-rigid registration methods for radiotherapy in prostate cancer

Rodríguez Vila, Borja and Gayá Moreno, Francisco Javier and Pozo Guerrero, Francisco del and García Vicente, Feliciano and Gómez Aguilera, Enrique J. (2008). A new geometrical method for 3D evaluation of non-rigid registration methods for radiotherapy in prostate cancer. In: "Computer Assisted Radiology and Surgery 22nd International Congress and Exhibition (CARS 2008)", 25/06/2008-28/06/2008, Barcelona, España.

Description

Title: A new geometrical method for 3D evaluation of non-rigid registration methods for radiotherapy in prostate cancer
Author/s:
  • Rodríguez Vila, Borja
  • Gayá Moreno, Francisco Javier
  • Pozo Guerrero, Francisco del
  • García Vicente, Feliciano
  • Gómez Aguilera, Enrique J.
Item Type: Presentation at Congress or Conference (Article)
Event Title: Computer Assisted Radiology and Surgery 22nd International Congress and Exhibition (CARS 2008)
Event Dates: 25/06/2008-28/06/2008
Event Location: Barcelona, España
Title of Book: Proceedings of the Computer Assisted Radiology and Surgery 22nd International Congress and Exhibition (CARS 2008)
Date: 2008
Subjects:
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Tecnología Fotónica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Three-dimensional conformal radiotherapy aims at delivering a high dose of radiation to the tumour, while sparing the surrounding normal tissue to a maximum extent. Image registration is an essential tool for monitoring radiation therapies, since allows morphological comparisons in presence of anatomic variations. The evaluation of non-rigid registration methods is very complicated owe to the absence of a known pointwise correspondence. The use of analysis of variations in target volume delineations has been proposed in the past for the evaluation of non-rigid registration methods. Delineation of the target volume is usually accomplished by outlining the contour of the volume in each separate tomographic slice. In the studies of reference, the 3D surface is rendered from the contours by means of a Delauney triangulation. This geometrical method only works correctly for convex structures. However the volumes involved on pelvic anatomy, such as bladder or prostate including the seminal vesicles, have relevant concavities that introduce a huge error in the evaluation. A new geometrical method for the evaluation of convex-concave target volumes delineation is proposed.

More information

Item ID: 4116
DC Identifier: http://oa.upm.es/4116/
OAI Identifier: oai:oa.upm.es:4116
Official URL: http://www.cars-int.org/2008/cars_2008.html
Deposited by: Memoria Investigacion
Deposited on: 28 Mar 2011 09:54
Last Modified: 20 Apr 2016 13:27
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